Locking key for closure plugs



June 16, 1931. A. R. soDERQUlsT 1,810,795

LOCKING KEY FOR cLosURE PLUGS original Filed Feb. .1.7. 1927 zz i? if /f'l /fz 1f 9 Patented June 16, 1931 PATENT OFFICE ARTHUR R. SODERQUIST, FIDAHO FALLS, IDAHO LOCKING KEY FOR CLOSURE PLUGS Original applicationled February 17, 1927, Serial No. 169,019. Patent No. 1,712,361, datedMay 7, 1929. Divided and this application ed January 24, 1929. SerialNo. 334,756.

The invention relates to a key for inserting and removing closure plugsof h-ot water bottles, and the like, this application being a divisionof application for lock closures for ice bags, filed Feb. 17th, 1927,Serial No. 169,019, and patented on May 7 1929, Patent No. 1,712,861,and the object of the invention is the provision of a locking keyv forhet water bags, ice bags, and the like that is adapted to insert andremove plugs in filling openings of articles of the character statedprovided with flanges surrounding the edges of the plug to preventtampering with y the plug by unauthorized persons as stated in theapplication referred to.

A further object of the invention is the provision of a key for thepurpose stated that is reasonable in cost of manufacture and effectivein operation. f

The invention will be described in detail hereinafter, and will be foundillustrated in the accompanying drawings in which Figure 1 is atransverse sectional View of a fragment of an ic-e or het water bag andits filling opening showing the key in position and engaging the plug,

Figure 2 is a bottom plan view of the key, and

Figure 3 is a transverse sectional view thereof. Y

In the drawings similar reference characters are used to designatelcorresponding parts throughout-the several views.

An ice or hot water bag l is provided with a neck 2 and secured in theneck 2 is a sleeve 3 and screw threaded as shown. Sleeve 3 is providedwith an annular iiange l extending radially of the neck portion 2 and anaxial flange 5'. The flange 4 is spaced from the sleeve 3 to provide agroove 6 to receive the upper edge of the neck 2. 7 indicates theclosure plug that is threaded into the sleeve 3 and provided with aradial flange 8 that overlies the flange 4, said plug when in positionbeing surrounded by the flange 5 to prevent gripping the plug forremoval. 9 is a gasket that is mounted in an annular groove 10 in theunder side of the flange 8, and 11 designates recesses in the upper faceof the plug 7 to receive lugs or projections on the locking key 12, saidlocking key being preferablyvmade of sheet metal and having its (sideedges turned down as shown at 13 'to form a grip for turning the lockingkey, thesurface of said flange 13 may be milled or otherwise roughenedfor providing a better grip, this being common practice. 14 `indicateslugs or projections adapted to engage in the recesses 11 and formed bypressing the metal of the key 12. y

In use it will be apparent that the plug 7 may be turned into the neck 2having threaded connection with the sleeve V3 as shown and when seatedb-y the Vkey member 12 the key will be removed and it will then beimpossible to remove the plug without a similar key member and danger ofremoval of the plug by an unauthorized person, such,

for instance as a bed-ridden patient, and consequent flooding of thebed, may be avoided, also preventing patient from stealing ice from theice bag which may cause his death when not allowed to have either ice orwater. v

What is claimed is A locking key for closure plugs comprising an annularone-piece sheet metal body, said body being circular and having amarginal flange depending from the top thereof, I Y

